.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: fixed;
  left: 0;
  top: 0;
  width: 100%;
  height: 80px;
  padding: 0 80px;
  box-sizing: border-box;
  background-color: rgba(21, 171, 133, 0.1);
  z-index: 999;
}
.header .left {
  display: flex;
  align-items: center;
}
.header .left h3 {
  font-size: 32px;
  color: #fff;
  line-height: 80px;
}
.header .left > img {
  display: block;
  width: 47px;
  margin-right: 10px;
}
.header .right {
  display: flex;
}
.header .right a {
  font-size: 16px;
  color: #ccc;
}
.header .right a.active {
  color: #2AE073;
}
.header .right i {
  display: block;
  width: 1px;
  height: 18px;
  margin: 0 18px;
  background-color: #2AE073;
  transform: rotate(30deg);
  -ms-transform: rotate(30deg);
  /* IE 9 */
  -moz-transform: rotate(30deg);
  /* Firefox */
  -webkit-transform: rotate(30deg);
  /* Safari 和 Chrome */
  -o-transform: rotate(30deg);
}
.section1 {
  background: url('../images/page1.png') no-repeat center;
  background-size: cover;
}
.section1 .content1 {
  position: absolute;
  top: 270px;
  left: 50%;
  transform: translateX(-50%);
  color: #fff;
  text-align: center;
}
.section1 .content1 > h3 {
  font-size: 56px;
}
.section1 .content1 > P {
  font-size: 24px;
  margin-top: 37px;
  margin-bottom: 50px;
}
.section1 .content1 > a {
  display: block;
  width: 240px;
  height: 68px;
  margin: 0 auto;
  border: 1px solid #fff;
  text-align: center;
  line-height: 68px;
  font-size: 30px;
  color: #fff;
}
.section1 .content1 > a:hover {
  background-color: rgba(255, 255, 255, 0.3);
}
.section1 .next-box {
  position: absolute;
  bottom: 32px;
  left: 50%;
  height: 80px;
  width: 100px;
  transform: translateX(-50%);
  color: #fff;
  font-size: 16px;
  font-weight: 300;
  text-align: center;
}
.section1 .next-box > a {
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 100%;
  color: #fff;
  text-align: center;
}
.section1 .next-box img {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  animation: mymove 1s infinite;
  -webkit-animation: mymove 1s infinite;
}
@keyframes mymove {
  from {
    top: 0;
  }
  to {
    top: 10px;
  }
}
@-webkit-keyframes mymove {
  /*Safari and Chrome*/
  from {
    top: 0;
  }
  to {
    top: 10px;
  }
}
.section2 {
  background: url('../images/page2.png') no-repeat center;
  background-size: cover;
}
.section2 .content2 {
  position: absolute;
  top: 130px;
  left: 50%;
  width: 1200px;
  transform: translateX(-50%);
  text-align: center;
}
.section2 .content2 > h3 {
  font-size: 48px;
  color: #fff;
  margin-bottom: 26px;
}
.section2 .content2 p {
  font-size: 12px;
  color: #ccc;
  font-weight: 300;
  line-height: 24px;
}
.section2 .content2 .poster-main {
  margin-top: 120px;
}
.section2 .content2 .mask {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.6);
  z-index: 999;
  color: #2AE073;
}
.section2 .content2 .mask .mask-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}
.section2 .content2 .mask .mask-center > a {
  display: inline-block;
  width: 140px;
  height: 32px;
  background: url(../images/page2-btn.png) no-repeat;
  color: #2AE073;
  line-height: 32px;
  text-align: center;
  font-size: 14px;
}
.section2 .content2 .mask .mask-center-list {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: space-around;
  align-items: center;
}
.section2 .content2 .mask .mask-center-list > div {
  flex: 1;
  text-align: center;
}
.section2 .content2 .mask .mask-center-list > div > img {
  display: block;
  width: 80px;
  margin: 12px auto;
}
.section2 .content2 .mask .mask-center-list > div > p {
  font-size: 16px;
  color: #fff;
}
.section2 .content2 .mask .mask-center-list > div > .center-btn-list > a {
  margin-right: 20px;
}
.section2 .content2 .mask .mask-center-list > div > .center-btn-list > a:last-child {
  margin-right: 0;
}
.section2 .content2 .mask .mask-center-list a {
  display: inline-block;
  width: 80px;
  height: 24px;
  margin-top: 20px;
  background: url(../images/page2-btn2.png) no-repeat;
  color: #2AE073;
  line-height: 24px;
  text-align: center;
  font-size: 14px;
}
.section2 .content2 .poster-item:hover .mask {
  display: block;
}
.section2 .content2 .btn-box {
  position: absolute;
  top: -90px;
  left: 50%;
  transform: translateX(-50%);
  display: table;
  z-index: 999;
}
.section2 .content2 .btn-box .index-btn {
  display: inline-block;
  padding: 0 14px;
  height: 48px;
  border: 1px solid rgba(153, 153, 153, 0.5);
  text-align: center;
  line-height: 48px;
  font-size: 14px;
  color: #ccc;
  margin-right: 10px;
  cursor: pointer;
}
.section2 .content2 .btn-box .index-btn:hover {
  color: #2AE073;
  border-color: #15AB85;
}
.section3 {
  background: url('../images/page3.png') no-repeat center;
  background-size: cover;
}
.section3 .content3 {
  position: absolute;
  top: 130px;
  left: 50%;
  width: 1058px;
  transform: translateX(-50%);
  text-align: center;
}
.section3 .content3 > h3 {
  font-size: 48px;
  color: #fff;
}
.section3 .content3 > .nav-list {
  margin-top: 40px;
  margin-bottom: 26px;
}
.section3 .content3 > .nav-list a {
  display: inline-block;
  height: 48px;
  padding: 0 20px;
  color: #ccc;
  border: 1px solid rgba(204, 204, 204, 0.5);
  text-align: center;
  line-height: 48px;
  font-size: 14px;
  margin-right: 26px;
}
.section3 .content3 > .nav-list a:last-child {
  margin-right: 0;
}
.section3 .content3 > .nav-list a.active {
  border: 1px solid #15AB85;
  background-color: rgba(21, 171, 133, 0.3);
  color: #2AE073;
}
.section3 .content3 > .nav-list a:hover {
  border: 1px solid #15AB85;
  color: #2AE073;
}
.section3 .content3 > p {
  font-size: 12px;
  color: #ccc;
}
.section3 .content3 > .list-box {
  display: flex;
  flex-wrap: wrap;
  margin-top: 48px;
  border-left: 1px solid rgba(21, 171, 133, 0.3);
  border-top: 1px solid rgba(21, 171, 133, 0.3);
}
.section3 .content3 > .list-box > li {
  width: 151px;
  height: 151px;
  border-right: 1px solid rgba(21, 171, 133, 0.3);
  border-bottom: 1px solid rgba(21, 171, 133, 0.3);
  background: url('../images/list-item.png') no-repeat;
}
.section3 .content3 > .list-box > li .item-box {
  margin: 0 auto;
  margin-top: 33px;
  text-align: center;
}
.section3 .content3 > .list-box > li .item-box > img {
  display: block;
  width: 64px;
  margin: 0 auto;
}
.section3 .content3 > .list-box > li .item-box p {
  font-size: 14px;
  color: #ccc;
  margin-top: 20px;
}
.section3 .content3 > .list-change {
  position: relative;
  width: 1058px;
  height: 370px;
  margin-top: 30px;
  overflow: hidden;
}
.section3 .content3 > .list-change .circle-line {
  position: absolute;
  top: 40px;
  left: 50%;
  transform: translateX(-50%);
  width: 978px;
  height: 700px;
  border-radius: 50%;
  border: 1px dashed rgba(21, 171, 133, 0.5);
}
.section3 .content3 > .list-change .change-item-box .change-item {
  position: absolute;
  left: 0;
  top: 260px;
  width: 110px;
  height: 110px;
  text-align: center;
  border-radius: 50%;
  background-color: #000;
  border: 1px solid rgba(21, 171, 133, 0.4);
  cursor: pointer;
  overflow: hidden;
}
.section3 .content3 > .list-change .change-item-box .change-item > .change-itemBg {
  position: absolute;
  top: 0;
  left: 0;
  transform: scale(0);
  transition: all 0.6s;
}
.section3 .content3 > .list-change .change-item-box .change-item.active {
  border: 0;
}
.section3 .content3 > .list-change .change-item-box .change-item.active .change-itemBg {
  transform: scale(1);
}
.section3 .content3 > .list-change .change-item-box .change-item.active > .item-text {
  color: #2AE073;
  font-weight: bold;
}
.section3 .content3 > .list-change .change-item-box .change-item:hover {
  Perspective: 200;
  animation: myRotate 1s;
  -moz-animation: myRotate 1s;
  /* Firefox */
  -webkit-animation: myRotate 1s;
  /* Safari 和 Chrome */
  -o-animation: myRotate 1s;
  /* Opera */
}
@keyframes myRotate {
  from {
    transform: rotateY(0deg);
  }
  to {
    transform: rotateY(360deg);
  }
}
@-moz-keyframes myfirst {
  /* Firefox */
  from {
    transform: rotateY(0deg);
  }
  to {
    transform: rotateY(80deg);
  }
}
@-webkit-keyframes myfirst {
  /* Safari 和 Chrome */
  from {
    transform: rotateY(0deg);
  }
  to {
    transform: rotateY(80deg);
  }
}
@-o-keyframes myfirst {
  /* Opera */
  from {
    transform: rotateY(0deg);
  }
  to {
    transform: rotateY(80deg);
  }
}
.section3 .content3 > .list-change .change-item-box .change-item > .item-text {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 98px;
  color: #A9BACC;
  line-height: 21px;
  font-weight: 400;
  font-size: 14px;
}
.section3 .content3 > .list-change .change-item-box .change-item.item1 {
  top: 260px;
  left: 0;
}
.section3 .content3 > .list-change .change-item-box .change-item.item2 {
  left: 153px;
  top: 80px;
}
.section3 .content3 > .list-change .change-item-box .change-item.item3 {
  left: 365px;
  top: 2px;
}
.section3 .content3 > .list-change .change-item-box .change-item.item4 {
  left: 580px;
  top: 2px;
}
.section3 .content3 > .list-change .change-item-box .change-item.item5 {
  left: 800px;
  top: 80px;
}
.section3 .content3 > .list-change .change-item-box .change-item.item6 {
  left: 946px;
  top: 260px;
}
.section3 .content3 > .list-change .item-img-box .item-img {
  position: absolute;
  bottom: -225px;
  left: 50%;
  transform: translateX(-50%);
  width: 420px;
  height: 225px;
  border-radius: 4px;
  overflow: hidden;
  transition: all 0.3s;
}
.section3 .content3 > .list-change .item-img-box .item-img > img {
  display: block;
  width: 100%;
}
.section3 .content3 > .list-change .item-img-box .item-img:hover .item-mask {
  display: block;
}
.section3 .content3 > .list-change .item-img-box .item-img .item-mask {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.6);
  text-align: center;
}
.section3 .content3 > .list-change .item-img-box .item-img .item-mask > .mask-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.section3 .content3 > .list-change .item-img-box .item-img .item-mask > .mask-center > a {
  display: inline-block;
  width: 100px;
  height: 30px;
  background: url('../images/page4-btn.png') no-repeat;
  color: #2AE073;
  text-align: center;
  line-height: 30px;
}
.section3 .content3 > .list-change .item-img-box .item-img .item-mask > .mask-center-list {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: space-around;
  align-items: center;
}
.section3 .content3 > .list-change .item-img-box .item-img .item-mask > .mask-center-list > div {
  flex: 1;
  text-align: center;
}
.section3 .content3 > .list-change .item-img-box .item-img .item-mask > .mask-center-list > div > img {
  display: block;
  width: 80px;
  margin: 12px auto;
}
.section3 .content3 > .list-change .item-img-box .item-img .item-mask > .mask-center-list > div > p {
  font-size: 16px;
  color: #fff;
}
.section3 .content3 > .list-change .item-img-box .item-img .item-mask > .mask-center-list > div > .center-btn-list > a {
  margin-right: 20px;
}
.section3 .content3 > .list-change .item-img-box .item-img .item-mask > .mask-center-list > div > .center-btn-list > a:last-child {
  margin-right: 0;
}
.section3 .content3 > .list-change .item-img-box .item-img .item-mask > .mask-center-list a {
  display: inline-block;
  width: 80px;
  height: 24px;
  margin-top: 20px;
  background: url(../images/page2-btn2.png) no-repeat;
  color: #2AE073;
  line-height: 24px;
  text-align: center;
  font-size: 14px;
}
.section4 {
  background: url('../images/page4.png') no-repeat center;
  background-size: cover;
}
